Emerson 73w17 Natural Gas Valve 0.5 in 24V Lennox Hvac

Product Description

The EMERSON 73w17 is a 1/2-inch natural gas valve rated at 24 volts and 3.5 inches water column (WC) outlet pressure. It serves as an OEM-replacement gas valve for Lennox HVAC equipment, controlling the flow of natural gas to the burner assembly in forced-air furnace systems. Licensed HVAC technicians install this valve as part of routine furnace service or when diagnosing ignition and gas-flow faults. The 24-volt control circuit is standard in residential gas furnace applications, making this valve a direct fit for low-voltage thermostat-controlled systems.

This valve is intended for residential and light-commercial gas furnace applications where a 1/2-inch natural gas line and 24-volt control voltage are specified. It is an OEM-designated part for Lennox HVAC equipment, making it appropriate for service calls on Lennox gas furnace installations where the original valve has failed or is being replaced as part of a system repair. Confirm inlet and outlet pipe sizing and fuel type before installation.

Key Features

• 1/2-inch pipe connection size for standard residential gas supply lines
• 24-volt control voltage compatible with low-voltage thermostat wiring
• 3.5 inches WC outlet pressure rating for natural gas applications
• OEM-designated replacement for Lennox HVAC equipment
• Natural gas fuel type — not rated for propane or LP service

Compatibility

Designated as an OEM-style replacement for Lennox HVAC equipment requiring a 1/2-inch natural gas valve with 24-volt control and 3.5 inches WC pressure rating.

Installation Notes

Installation must be performed by a licensed HVAC technician in accordance with local codes and the International Fuel Gas Code (IFGC). Shut off the gas supply and disconnect power to the furnace before removing the existing valve. Verify inlet and outlet orientation, pipe thread type, and fuel type before completing the connection. Perform a leak test with approved leak-detection solution after restoring gas pressure.

Technical Specifications

• Fuel Type: Natural Gas
• Connection Size: 0.5 inches
• Control Voltage: 24 volts
• Outlet Pressure: 3.5 inches WC

Standard Information

• Brand: EMERSON
• Manufacturer Part Number: 73w17